Flanging device for paper drinking-cups.



L. W. PARMER; FLANGING DEVICE FOR PAPER DRINKING CUPS.

AYPLIGATION FILED AUG. 23, 1912. v Patented Dec. 30,1913

LUKE W. FARMER, OF SOMERVILLE, MASSACHUSETTS.

FLANGING DEVICE FOR PAPER DRINKING-CUPS.

Specification of Letters Patent.

Patented Dec.30,1913.

Application filed August 23, 1912. Serial No. 716,583.

To all whom it may} concern Be it known that I, LUKE W. FARMER, a citizen of the United States, residing at Somerville, in the county of Suffolk and State of Massachusetts, have invented an Improvement in F langing Devices for Paper Drinking-Cups, of which the following is a specification.

In the manufacture of paper drinkingcups, it is desirable to form an outward flange at the top of the cup; and this invention has for its object the construction of a simple device for this purpose.

The device comprises essentially a hollow rotatable cup-holder, into which the cup is placed, which is made shorter than the cup, so that the top of the cup will project a short distance above it, and a. flanging-to-ol which is supported on a standard at the side of said cup-holder, and movable about a horizontal axis to admit of the tool being tilted in an upward direction to pass over the top of the cup, so as to occupy a position at the inside thereof, and is also mov able about a vertical axis to admit of its being swung in a horizontal plane,to bend the top of the cup outward over upon the top of the cup-holder, thereby to form the flange.

Figure-1 is a. side elevation of a cupflanging device embodying this invention. Fig. 2 is a plan view of the same. Fig. 3 is'a sectional detail of the flanging tool and a portion of the cup-holder. Fig. 4- is a side elevation of the flanged cup.

10 represents a hollow cup-holder, of conical form, to receive a paper cup to be flanged. It is secured to a rotatable spindle 12, whereby it is rapidly rotated. It is made shorter than the cup, so that the top of the cup when contained therein will project a short distance above it, see Fig. 1, such dis tance being equal to the width of the flange which is to be formed.

14 represents an upright standard or post, which is arranged at the side of the cupholder. A block .or head 15 is swivcled to the top of the standard 14, thereby to enable it to be turned on a vertical axis, and said block has a pair of cars between which the shank of the flanging-tool is placed, and said tool is pivotally connected to said cars by a pin 16 passing through the ears and the shank of thetool. Said pivot-pin 16 is arranged horizontally. thus admitting of the fianging-tool being T lOVefl about a horizontal axis, and as the block bearing said tool 1s movable about a vertical axis the flanging-tool is likewise movable.

The flanging-tool comprises a shank 20,-

having a flangeforming portion at its forward end, made as a finger 21 which is made convex on its under side and preferably convex on its upper side, see Fig. 3, and is in clined at its extremity, or curved upwardly, see Fig. l, and said shank has a handle 22 at its rear end adapting it to be engaged by hand for the purpose of manipulating the tool.

In operation, a paper cup to be flanged is placed upside down in a shallow pan of water, thereby to saturate its top, which portion thereof is to be turned outward to form the flange; then the cup is placed in the cup-holder in upright position wit-h its top projecting a short distance above it;

thenthe flanging-tool is engaged by hand and 1ts finger 21 is raised and moved over the top of the cup into a position in the line of a chord of the arc thereof, and is then depressed and brought into engagement with the projecting portion or edge of the cup at the inside thereof, and is then moved outward to bend the edge of the cup in an outward direction. over upon the top of the cup-holder while the cup-holder bearing the cup rotates, thereby to form the flange. All of these motions may be given to the ool by manipulating the handle. By reason of the arrangement of the fingers as here shown in the line of a. chord of the arc of the cup edge when in engagement therewith, the edge of the cup convergently or obliquely engages the finger, although in addition thereto said edge of the cup convergently engages the convex face of the finger.

Iclaimz- 1. A flanging-device for paper drinking cups consisting of a rotatable hollow cupholder made shorter than the cup, permitting the top of the cup to project above it a short distance, a flangi-ngtool supported at the side of the cup-holder having a flangingfinger with a convex under side arranged to be extended over the edge of the cup on the line of a chord of the arc thereof, whereby the edge of the cup convergently engages said finger, said tool being movable to move the finger into and out of engagement with the edge of the cup, substantially as described.

2. A fianging-device for paper drinking cups consisting of a rotatable hollow cupholder made shorter than the cup, permitting the top of the cup to project above it a short distance, a fianging-tool supported at the side of the cup-holder havinga flangingfinger with an upwardly curved end-portion and with a convex under side arranged to be extended over the edge of the cup on the line of a chord of the arc thereof, whereby the edge of the cup convergently engages said finger, said tool being movable to move the finger into and out of engagement with the edge "of the cup, substantially as described.

3. A flangingdevice for paper drinking on s consisting of a rotatable hollow cupho der made shorter than the' cup, permitting the top of the cup to project above it a short distance, a Hanging-tool, a block swiveled to the upper end of a standard arranged at the side of the cup-holder to which said tool is pivoted, whereby said tool may be given four motions to pass over the top of the cup without engaging it, and to engage the top of the cup upon return movement, said tool having means as a handle by which said four motions may be given to it.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses.

LUKE W. FARMER.

Witnesses:

GEO. R. BLINN, LUCY M. LINDQUIST. 

